JP5468270B2 - Empty case suspension device for pole transformer - Google Patents

Description

  The present invention relates to a suspension device used in the recycling process of a pole transformer, and more particularly to an empty case suspension device for a pole transformer used to transfer an empty case after dismantling.

  Many parts of electrical equipment and the like are made of metal such as iron and copper, and it is desired to be recycled from the viewpoint of effective use of resources. The pole transformer attached to the utility pole is also composed of many metal parts, and similarly, recycling is desired from the viewpoint of effective use of resources. Since members such as iron cores and coils in the pole transformer are immersed in insulating oil containing PCB (Polychlorinated Biphenyl), it is necessary to remove the insulating oil and PCB from each member when recycling each member. is there. In a system that recycles electrical equipment containing PCB, after crushing electrical equipment containing PCB, this crushed material is separated into valuable materials and non-valuable materials, and valuable materials that meet the criteria for residual PCB It is only subject to recycling. However, in a system for crushing electrical equipment, there are problems that separation of crushed materials becomes complicated because various members are mixed, and crushed materials that are difficult to separate cannot be recycled.

  Therefore, in recycling the pole transformer, it is desirable to remove the PCB after separating it into empty cases, insulators, cores, etc. by dismantling. Here, the pole transformer is lifted by using a dedicated lifting bracket provided at the top when attached to or removed from the utility pole, but is dedicated to the empty case of the pole transformer that has been disassembled. Since there is no lifting bracket, when transferring an empty case to another process during the recycling process, a crane or the like cannot be used as it is, and transportation must be performed manually. Since the empty case of the pole transformer is heavy, it requires a lot of labor to transfer manually, and it is dangerous and has a safety problem.

  As a technique for lifting a cylindrical heavy object, there is known an apparatus (for example, refer to Patent Document 1) that can swing a pair of arms having claws by a link mechanism and lift a coiled steel plate of various sizes. ing.

JP 2008-56369 A

  However, when the apparatus of Patent Document 1 is applied to the conveyance of an empty case of a pole transformer, the following problem occurs. In this device, when the link mechanism is operated, the vertical position of the claw changes due to the swinging of the arm, so it is necessary to perform remote operation assuming the movement position of the claw. There is a problem that it is difficult. Particularly in the case of a small-capacity empty case, since the inner diameter is small, it is difficult to accurately position the claws inside the empty case by remote operation, resulting in a problem that work efficiency is lowered. Moreover, since the arm swings in the horizontal direction and the vertical direction, the device of Patent Document 1 cannot be used when the device is long in the vertical direction and the ceiling of the building is low and the lifting height is limited. is there. Furthermore, since the device of Patent Document 1 uses a link mechanism, it is difficult to make the claws of the outer arms approach each other at a slight distance. When lifting a short empty case, the inner claws are Must be used. Therefore, depending on the length of the empty case to be lifted, it is necessary to use an outer claw and an inner claw separately, and there is a problem that the operation becomes complicated.

  Therefore, the present invention can easily align the claw with the empty case of the pole transformer, and can downsize the device in the vertical direction, and also uses the same claw even in the empty case having different lengths. It is an object of the present invention to provide an empty case suspension device for a pole transformer that can lift an empty case.

In order to achieve the above object, a first aspect of the present invention is a frame that is suspended in a horizontal direction by a load handling machine that is movable in the vertical direction and the horizontal direction, and a frame that is held by the frame and that is linear in the horizontal direction A pair of slide frames that can move to each other, and can enter the hollow portion inside the empty case in the horizontal direction from both ends of the empty case of the columnar transformer provided on each slide frame and formed in a cylindrical shape. Claws and drive means for moving the slide frames toward or away from each other in the horizontal direction, the drive means being driven by a bearing that is rotationally driven by an electric motor and whose both ends are fixed in the vicinity of both ends in the horizontal direction of the frame. A feed screw to be supported, and the frames are respectively attached to both ends in the horizontal direction of the frame to which the bearings are fixed. And suspended to the handling machine via a suspension plate arranged at a position facing through di-, each pawl, the hollow of the empty case by the movement of approaching direction of the respective slide frame by said driving means And a vertical engagement with the inner surface of the hollow case in the hollow part when the frame is lifted by the cargo handling machine. It is an empty case suspension device for a transformer.

  According to the present invention, the claw provided on the slide frame moves linearly in the horizontal direction by moving the slide frame by the driving means, and the claw engages with the empty case. The empty case is lifted by moving the frame with the cargo handling machine with the claws engaged with the empty case, and the empty case is moved to a predetermined position by the cargo handling machine.

  According to a second aspect of the present invention, in the empty case suspension device for a pole transformer according to the first aspect, the frame includes a conveyor for transporting the empty case and a stop of a trailer for loading the empty case. It is characterized by being moved between positions by the cargo handling machine.

According to a third aspect of the present invention, in the empty case suspension device for a pole transformer according to the first or second aspect , a stop position of the slide frame is automatically controlled according to the size of the empty case. It is characterized by that.

  According to the first aspect of the present invention, since the claw is moved linearly in the horizontal direction by the movement of the slide frame and the position of the claw in the vertical direction is not changed, the claw is accurately engaged with the empty case. Becomes easy. As a result, the empty case can be lifted smoothly, and the lifting work efficiency can be increased. In addition, since the frame for holding the slide frame and the driving means extend in the horizontal direction, the apparatus can be made compact in the vertical direction, and even if the ceiling of the building is low and the lifting height is limited, the empty case Can be lifted. Furthermore, the slide frame provided with the claw can move linearly in the horizontal direction, and the claw can be positioned over a wide range in the horizontal direction by the driving means, so even in empty cases with different lengths, the same It is possible to lift the empty case using the claws.

  According to the second aspect of the present invention, the frame moves between the conveyor carrying the empty case and the stop position of the trailer for loading the empty case, so that the empty case on the conveyor is transferred to the trailer. Work becomes easy.

According to the third aspect of the present invention, since the stop position of the slide frame is automatically controlled according to the size of the empty case, the adjustment operation of the stop position of the slide frame is not necessary, and the work efficiency can be improved.

It is a front view which shows the usage example of the empty case suspension apparatus of the pole transformer concerning Embodiment 1 of this invention. It is a top view of the empty case suspension apparatus of FIG. It is a side view of the empty case suspension apparatus of FIG. It is a flowchart which shows the flow of the dismantling process of a pole transformer. It is a flowchart which shows the flow of a process in the recycling center of the pole transformer which uses the suspension apparatus of FIG. It is a top view of the terminal vicinity vicinity of the conveyor by which the empty case suspension apparatus of FIG. 1 is arrange | positioned, and the trailer stop position vicinity. It is sectional drawing which shows an example of the empty case of the pole transformer in FIG. It is a front view of the empty case suspension apparatus of the pole transformer concerning Embodiment 2 of this invention. It is a control block diagram of the empty case suspension apparatus of FIG.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
1 to 7 show Embodiment 1 of the present invention. The code | symbol 1 has shown the overhead traveling crane as a cargo handling machine. As shown in FIG. 1, the overhead traveling crane 1 has traveling wheels (not shown) at both ends of a main body frame 2, and a hoist 4 is attached to the main body frame 2. The hoist 4 is movable along the main body frame 2. The hoist 4 has a wire rope 7 wound around a drum 5, and a hook 6 is attached to the wire rope 7 via a pulley 9. The hook 6 can be moved up and down by forward or reverse rotation of the drum, and can be rotated around the axis (in the direction of arrow C) with respect to the pulley 9. As shown in FIG. 6, the overhead traveling crane 1 can travel on the traveling rail 3 fixed to the building 8. A switch box (not shown) for operating the movement of the overhead traveling crane 1 is suspended from the main body frame 2. The hook 6 can be moved in the vertical direction and the horizontal direction by operating each switch of the switch box.

  1 to 3 show an empty case suspension device 11 for a pole transformer that is moved by an overhead traveling crane 1. The empty case suspension device 11 has a frame 12 extending in the horizontal direction. For the frame 12, for example, channel steel is used. A pair of slide frames 13 is held on the outer periphery of the frame 12 so as to be movable in the horizontal direction. Each slide frame 13 includes a holder 13a and an arm 13b. The holder 13a is made of a rectangular tubular member, and the frame 12 is inserted through the hollow portion. As a result, the holder 13a can move linearly along the frame 12 in the horizontal direction. Each arm 13b extends downward from the lower surface side of the holder 13a, and its upper end is fixed to the holder 13a. A claw 14 that can be engaged with the empty case 51 of the pole transformer 50 is attached to the lower end of each arm 13b. The nail | claw 14 is formed in the substantially L shape. The lower end portion of the claw 14 extends in the horizontal direction, and the lower end portion can enter the hollow portion (concave portion) of the empty case 51. An inclined surface 14 a for facilitating entry into the empty case 51 is formed on the top surface of the tip of the claw 14. The claws 14 are opposed to each other, and the empty cases 51 are sandwiched between the claws 14 when the claws 14 enter the opposite ends of the empty case 51. In a state in which the leading end portion of each claw 14 has entered from both end portions of the empty case 51, each claw 14 and the empty case 51 are engaged in the vertical direction. A first nut 15 a having a right-hand screw is attached to the holder 13 a of one slide frame 13. A second nut 15 b having a left-hand screw is attached to the holder 13 a of the other slide frame 13.

  The frame 12 is provided with driving means 20 for moving each slide frame 13 in the horizontal direction. The drive means 20 includes a feed screw 21, a bearing 22, a base 23, a joint 24, an electric motor 25, and a switch 26. The feed screw 21 is located on the upper surface side of the frame 12 and extends in the horizontal direction. One end of the feed screw 21 is rotatably supported by a bearing 22 fixed to the upper surface side of one end of the frame 12. The vicinity of the other end of the feed screw 21 is rotatably supported by a bearing 22 fixed to the upper surface side of the other end of the frame 12. The first nut 15 a of one slide frame 13 is screwed with a right screw 21 a formed on the feed screw 21. The second nut 15 b of the other slide frame 13 is screwed with a left screw 21 b formed on the feed screw 21. A base 23 is attached to the other end of the frame 12. An electric motor 25 having a built-in speed reducer is fixed on the upper surface side of the base 23. The other end of the feed screw 21 is connected to the output shaft of the electric motor 25 via a joint 24. The feed screw 21 is rotationally driven by an electric motor 25, whereby each slide frame 13 can be moved along the frame 12. That is, since the feed screw 21 has a right screw 21a and a left screw 21b, the slide frames 13 approach or separate from each other when the feed screw 21 is rotated forward or backward. A switch 26 for adjusting the position of each slide frame 13 is connected to the electric motor 25.

  In this way, by adopting a structure in which the slide frames 13 are moved by the feed screws 21 extending in the horizontal direction, the claws 14 can be opposed to each other at a slight distance, and the empty case 51 with a short length is used. However, the engagement with the claw 14 is possible. Further, since the feed screw 21 extends long in the horizontal direction, each claw 14 can be positioned over a wide range in the horizontal direction, and each claw 14 can be opposed at a long distance. Thereby, even if it is the long empty case 51, engagement with the nail | claw 14 is attained, and the empty case suspension apparatus 11 can lift the empty case 51 of various length using the same nail | claw 14. FIG.

  FIG. 7 shows an example of the empty case 51 of the pole transformer 50. The empty case 51 is formed in a substantially cylindrical shape, and has a bottom plate 51a on the lower side. Each claw 14 can enter a recess 51 c formed by the hollow portion 51 b and the bottom plate 51 a of the empty case 51 by operating the switch 26. Each claw 14 engages with the inner side surface of the empty case 51 in the vertical direction when the frame 12 is lifted by the hoist 4.

  Suspension plates 17 are attached to the upper surface side in the vicinity of both ends of the frame 12. A hole 17 a is formed in the suspension plate 17. A suspension 30 for lifting the frame 12 is connected to each suspension plate 17. The hanging tool 30 is composed of a connecting fitting 31, a chain 32, and a hanging ring 33. The suspension ring 33 is attached to the hook 6 of the overhead traveling crane 1. Each suspension plate 17 is provided with a connector 31, and each connector 31 is coupled to a suspension ring 33 via a chain 32. The chain 32 of the lifting tool 30 has an eight-letter shape when the frame 12 is lifted by the overhead traveling crane 1.

  FIG. 6 shows a process of transferring the empty case 51 of the pole transformer 50. The disassembled empty case 51 of the pole transformer 50 is conveyed by the conveyor 60 and stops at the end of the conveyor 60. The traveling rail 3 for the overhead traveling crane 1 is positioned above the end of the conveyor 60, and the overhead traveling crane 1 can be stopped immediately above the end of the conveyor 60. A trailer 62 for loading empty cases 51 can enter the vicinity of the end of the conveyor 60. The overhead traveling crane 1 is movable from directly above the end of the conveyor 60 to directly above the loading platform 62a of the trailer 62. The empty case suspension device 11 suspended from the overhead traveling crane 1 via the lifting tool 30 can reciprocate between the end of the conveyor 60 and the loading platform 62a of the trailer 62 by the overhead traveling crane 1.

  FIG. 4 shows the flow of dismantling processing of the pole transformer 50. As shown in FIG. 4, the pole transformer 50 is separated into an empty case 51, an insulator 52, and a core portion 53 by disassembly. The core portion 53 is further disassembled and separated into an iron core 54, metal fittings 55, and a coil 56. The coil 56 is further disassembled and separated into a copper wire 57 and a paper tree 58. Since the PCB contained in the insulating oil adheres to the separated members 51 to 58, the members 51 to 58 are processed in the vacuum heating furnace 70 in order to remove them. Insulating oil and PCB are removed from each of the members 51 to 58 processed in the vacuum heating furnace 70 and supplied to other processes for recycling.

  Next, the operation of the first embodiment will be described. As shown in FIG. 5, the pole transformer 50 removed from the utility pole is carried into the receiving warehouse 80 of the recycling center and stored in the receiving warehouse 80. Thereafter, the pole transformer 50 of the receiving warehouse 80 is separated into the members 51 to 58 by the dismantling processes 81, 82, and 83. The insulating oil stored in the empty case 51 is extracted before being sent to the vacuum heating furnace 70 (reference numeral 59 in the figure). Since the insulating oil containing PCB adheres to each of the separated members 51 to 58, it is sent to the vacuum heating furnace 70 in order to remove the insulating oil and PCB. In the vacuum heating furnace 70, the insulating oil and the PCB are separated from the members 51 to 58 due to the reduced pressure in the furnace. Thereby, the insulating oil and PCB adhering to each member 51-58 are removed. The PCB and insulating oil vapor separated from the members 51 to 58 are condensed and recovered by cooling. The recovered insulating oil is sent to another facility for recycling. On the other hand, each member 51 to 58 processed in the vacuum heating furnace 70 is determined in the analysis step 84 for the residual level of PCB. The members 52 to 58 excluding the empty case 51 that has passed the determination are sent to another process. The empty case 51 that has passed the determination in the analysis step 84 is transported to the vicinity of the trailer 62 by the conveyor 60. The empty case 51 supplied to the end of the conveyor 60 stops at the end position of the conveyor 60.

  Next, operations of the overhead traveling crane 1 and the empty case suspension device 11 will be described. When the empty case 51 stops at the end position of the conveyor 60, the drum 5 of the hoist 4 of the overhead traveling crane 1 stopped just above the end position of the conveyor 60 rotates, and the hook 6 of the hoist 4 descends. As a result, the empty case suspension device 11 is lowered toward the empty case 51, and the empty case 51 is located between the slide frames 13. In other words, each claw 14 can enter the hollow portion of the empty case 51. Here, since the hook 6 of the hoist 4 is rotatable about the axis with respect to the pulley 9, the suspension device 11 can be rotated together with the hook 6 even when the position of the claw 14 with respect to the empty case 51 is deviated. Thus, the position of each claw 14 can be made to face the hollow portion 51b and the concave portion 51c of the empty case 51. In this state, when the “close” button of the switch 26 is pressed, the feed screw 21 is rotated by the electric motor 25 and the slide frames 13 are moved in directions approaching each other.

  As the slide frame 13 moves in the approaching direction, the tip of each claw 14 enters the empty case 51, and each claw 14 and the empty case 51 are engaged in the vertical direction. Here, when each claw 14 moves linearly in the horizontal direction by the movement of each slide frame 13, the vertical position of each claw 14 does not change, so each claw 14 is accurately placed in the empty case 51. It becomes easy to engage. Thereby, the lifting work of the empty case 51 can be performed smoothly, and the lifting work efficiency can be increased. When the engagement state between each claw 14 and the empty case 51 is confirmed, the hook 6 of the hoist 4 is raised, and the empty case 51 is lifted from the conveyor 60. When the empty case 51 is lifted to a predetermined height, the overhead traveling crane 1 moves along the traveling rail 3 toward the loading platform 62a of the trailer 62 (direction A in FIG. 6) and stops immediately above the loading platform 62a.

  When the overhead traveling crane 1 stops just above the loading platform 62a, the hook 6 of the hoist 4 is lowered, and the empty case suspension device 11 is lowered toward the loading platform 62a. When the “open” button of the switch 26 is pressed while the empty case 51 is landed on the loading platform 62a, the feed screw 21 is rotated in the opposite direction by the electric motor 25, and the slide frames 13 are moved away from each other. Thereby, the engagement between each claw 14 and the empty case 51 is released, and the transfer of the empty case 51 to the loading platform 62a is completed. Since the stop position of each slide frame 13 can be adjusted by the operation of the switch 26, it can cope with the empty cases 51 having different sizes. When the transfer of the empty case 51 is finished, the hook 6 rises and the overhead traveling crane 1 moves in the direction of the conveyor 60 (direction B in FIG. 6). When a predetermined number of empty cases 51 are loaded on the loading platform 62a of the trailer 62 in this way, the trailer 62 goes to another processing factory for recycling.

  As described above, since the empty case suspension device 11 is suspended from the hook 6 of the overhead traveling crane 1 via the suspension tool 30, the position of the center of gravity is lower than when the frame 12 itself is suspended. The shaking of the empty case suspension device 11 due to traveling is suppressed. In addition, since the transfer from the conveyor 60 to the trailer 62 is mechanized, the transfer effort of the empty case 51 is significantly reduced as compared with the case of using human power. Furthermore, since the operation of the empty case suspension device 11 can be performed by the switch 26, work safety is ensured.

  Since the empty case suspension device 11 is suspended from the overhead traveling crane 1 via the suspension tool 30, by removing the suspension tool 30 from the hook 6 of the overhead traveling crane 1, the overhead crane 11 becomes the empty case suspension device. It can be used without 11. Therefore, the overhead traveling crane 1 can carry articles other than the empty case 51 as necessary. Here, since the frame 12 holding each slide frame 13 and the driving means 20 extend in the horizontal direction, the apparatus can be made compact in the vertical direction, and the ceiling of the building is low and the lifting height is limited. However, the empty case 51 can be lifted. Further, the slide frame 13 provided with the claws 14 can move linearly in the horizontal direction, and each claw 14 can be positioned over a wide range in the horizontal direction by the driving means 20, so that the lengths in the width direction are different. Even if it is the empty case 51, it is not necessary to change a nail | claw like a prior art (patent document 1), and it becomes possible to lift the empty case 51 of various lengths using the same nail | claw 14. FIG.

(Embodiment 2)
8 and 9 show a second embodiment of the present invention. This embodiment particularly shows a suspension device that can automatically position the slide frame 13. As shown in FIG. 8, a position detection sensor 90 that detects the position of the slide frame 13 based on the amount of rotation of the feed screw 21 is attached to the frame 12. A signal S1 from the position detection sensor 90 is input to the controller 91. In the controller 91, stop position information of the slide frame 13 with respect to the size of the empty case 51 is stored in advance. A command signal S2 for selecting the size of the empty case 51 is input to the controller 91 by a selection button 92 provided on the switch 26. The controller 91 has a function of stopping the motor 25 and stopping the slide frame 13 at a predetermined position when the position signal S1 from the position detection sensor 90 matches the stop position information corresponding to the command signal S2 from the selection button 92. doing. According to the present embodiment, the slide frame 13 can be automatically positioned according to the size of the empty case 51 only by operating the selection button 92, and the transfer operation of the empty case 51 is facilitated.

  As described above, the first and second embodiments of the present invention have been described in detail. However, the specific configuration is not limited to these embodiments, and there are design changes and the like without departing from the scope of the present invention. However, it is included in this invention. For example, in Embodiments 1 and 2, the empty case 51 is sandwiched between the pair of claws 14, but if the empty case 51 and the claws 14 can be reliably engaged, even the single claws 14 can be lifted. is there. Moreover, although the drive means 20 is configured to use the feed screw 21, it is needless to say that drive means such as an air cylinder or a hydraulic cylinder can be used. Furthermore, in Embodiment 2, the slide frame 13 is positioned based on the stop position information. However, when the touch sensor is attached to the slide frame 13 and the touch sensor comes into contact with the empty case 51, the slide frame 13 is positioned. The approaching movement (movement toward the empty case 51 side) may be stopped.

1 Overhead traveling crane (loading machine)
DESCRIPTION OF SYMBOLS 3 Traveling rail 4 Hoist 6 Hook 11 Empty case suspension apparatus 12 Frame 13 Slide frame 14 Claw 15a 1st nut 15b 2nd nut 20 Driving means 21 Feed screw 25 Electric motor 30 Lifting tool 50 Pillar transformer 51 Empty case 60 Conveyor 62 Trailer 90 Position detection sensor 91 Controller 92 Selection button

Claims (3)

A frame that can be hung horizontally and horizontally on a loading machine that can move in the vertical and horizontal directions;
A pair of slide frames held in the frame and movable in a straight line in the horizontal direction;
A claw that can enter the hollow portion inside the empty case in the horizontal direction from both ends of the empty case of the pole transformer formed in a cylindrical shape provided in each slide frame,
Driving means for moving the slide frames toward or away from each other in the horizontal direction;
With
The drive means has a feed screw supported by a bearing that is rotationally driven by an electric motor and whose both end portions are fixed near both ends in the horizontal direction of the frame;
The frame is suspended from the cargo handling machine via suspension plates that are respectively attached near both ends in the horizontal direction of the frame to which the bearings are fixed and are disposed at positions facing each other via the feed screw.
Each of the claws can sandwich the empty case from both ends of the hollow portion by movement of the slide frames in the approaching direction by the driving means, and the frame is lifted by the cargo handling machine. Engage the inner surface in the hollow portion of the empty case in the vertical direction,
An empty case suspension device for a pole transformer characterized by that.   The pole transformer according to claim 1, wherein the frame is moved by the cargo handling machine between a conveyor for carrying the empty case and a stop position of a trailer for loading the empty case. Empty case hanging device. 3. The empty case suspension device for a pole transformer according to claim 1 , wherein a stop position of the slide frame is automatically controlled according to a size of the empty case.

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